The transmission of the Death Star plans in *Rogue One: A Star Wars Story* involves a multi-stage process, beginning with the physical retrieval of the data and culminating in the destruction of the planetary shield for a successful transmission.
The specific steps are as follows:
### 1. Retrieval of the Physical Data Tape (Inside the Citadel Tower)
* **Infiltration and Access:** Jyn Erso, Cassian Andor, and K-2SO infiltrate the Imperial complex on Scarif, making their way to the Citadel Tower, which houses the classified data vault.
* **Locating the Plans:** Jyn and Cassian enter the high-security data vault while K-2SO holds off Imperial forces. The Death Star schematics are not easily accessible, requiring Jyn to search through a system of physical archives until she locates the file labeled **"Stardust"** (her father Galen Erso's codename for the project).
* **Acquisition:** Jyn physically retrieves the Death Star plans, which are stored on a specialized, obsolete-looking **data tape/drive** (sometimes referred to as a physical data disc). She then carries this physical drive to the tower's transmission antenna array.
### 2. Preparing the Transmission System
* **Antenna Array Access:** Jyn must climb to the very top of the massive Citadel Tower, where the main Imperial communications and data transmission dish is located.
* **Data Upload:** She inserts the physical data tape into a transmission terminal on the tower's antenna array, initiating the upload process. The size of the data file is noted as being too large to transmit through the planet's operational shield.
* **Antenna Realignment:** To ensure the signal reaches the Rebel fleet's command ship, Jyn is required to manually **realign the main dish**. She moves to the exposed control panel at the tip of the tower and repositions the large antenna dish.
* **Imperial Intervention:** During this process, Director Krennic confronts Jyn, stating that her efforts are futile as the planetary shield remains closed. Cassian Andor then arrives to shoot and wound Krennic.
### 3. Enabling the External Communications Link
* **Local Communications Hack:** Simultaneously, the Rebel ground team's mission is to bypass the closed planetary communications network. Imperial pilot Bodhi Rook, under fire, must find and flip the **Master Switch** on the planet's surface to connect with the Rebel fleet in orbit.
* **Activation:** Chirrut Îmwe, using his spiritual strength, manages to manually engage the Master Switch in a bunker, sacrificing himself to secure the connection.
* **Warning Transmission:** With the link secured, Bodhi Rook transmits a critical, low-power message to the Rebel fleet's flagship, Admiral Raddus's *Profundity*. The message informs them that the plans are ready to be sent, but they **must destroy the planetary Shield Gate** for the transmission to pass through.
### 4. Shield Destruction and Final Transmission
* **Rebel Action:** Responding to Bodhi's transmission, Admiral Raddus orders a modified lightspeed attack. A Rebel cruiser is used to crash into two orbiting Imperial Star Destroyers, which then collapse into the **Shield Gate generator**.
* **Opening the Window:** The wreckage destroys the generator, causing the immense planetary shield to collapse and creating a brief window for transmission.
* **Final Beam:** With the shield down, Jyn Erso activates the transmission on the terminal she prepared, and the massive data file of the Death Star plans is successfully **beamed from the Scarif Citadel Tower to the Rebel command ship** in orbit.